The Auxiliary also serves as an advisory group for the Museum. The PGMA was incorporated in February 1981. As part of the incorporation, the Auxiliary wrote a constitution (revised in October 1987) setting forth its objectives: the object and purpose of this organization shall be to bring together people with an interest in the conservation and preservation of prehistoric resources, specifically, the heritage of Arizona prehistory and that of the Salt River Valley; to assist Pueblo Grande Museum and staff in dispersing educational materials; to provide lecturers and tour guides; to assist in the preparation of exhibits, library cataloging and management, collection management, curatorial and conservation techniques, records management and research; and to organize, publicize and promote activities, events and fund raising for the Pueblo Grande Museum. The organization and its members may inform the Parks, Recreation and Library Board and the City Council of the city of Phoenix, Arizona on matters relating to Archaeology and the Pueblo Grande Museum. Membership in the Auxiliary is open to all individuals and the Auxiliary holds monthly meetings October through June. At these meetings the membership is updated on Auxiliary activities and educational programs.